Improvement in chain-pump buckets



UNITED ST TES WVILLIAM PEOKHAM, OF POPLAR RIDGE, NEW YORK, ASSIGNOR OFONE- Parana FFEGE.

HALF HIS RIGHT TO JONATHAN '1 PROUD, OF SAME PLACE.

IMPROVEMENT IN CH AiN PU P BUCKETS.

Specification forming part of Letters Patent No. 180,057, dated July 18,1876; application filed May 27,1876.

pump buckets which are constructed with solid metallic centers andelastic disks or washers, whereby the tube of the pump is entirelyclosed by said bucket, and no escape of water permitted, except througha waste-hole through the bucket. This waste-hole is constantly open andwasting water while the pump is in action, and the expenditure of powerin excess is proportionate to thequantity' of water escaping throughsaid waste.

The principal object of my invention is to obviate this waste, and stillprovide an escape at each bucket, under control of the operator; and tothat end it consists, first, in an elastic disk provided with one ormore orifices, which are closed by themetallic shackle-plate when thebucket is in operation-that is to say,-

moving upward-and its edges bentdownward by contact with the surfaceof'the pump-tube, whereby said metallic shackle-plate operates as avalve to closesaid orifices while the pumpbucket is moving upward, andopen the same when said bucket moves downward; second, in aradiallyribbed elastic packing-disk, whereby a sufficient thickness forstrength and stiffness is obtained without an undesirable thickness atthe orifices above named; third, in peripheral notches in the elasticdisk, whereby the flexibility of the edge of the same may be increasedat will without making said edges so thin as'to become frail.

That others may more fully understand my invention, I will particularlydescribe the structure of it which I prefer.

A is the metallic shackle attached to the chain B. This shackle isconstructed with a convex plate, a, and a neck, b, surmounted with ahead, a. The disk or plate a forms a seat for ,the elastic packing-diskD, which has a central hole, and is forced over the head rection, asshown in Fig. 3, so that while the buckets are moving upward no escapeis afforded for the water being carried upward by them, nor will itescape if the buckets come to a state of rest without moving downward;but

it' they are permitted to move downward a very little, the edges of thedisks D will be thereby turned upward, as in Fig. 3, and the holes d bethereby uncovered, and the'con'- tained water will escape freely.-

This is the simplest form of valve controllable by the operator, and itis therefore preferred; but I do not desire to be limited thereto. 7

The radial ribs or projections e stiffen the disk D toward itsperiphery, and thus prevent its yid ling too readily to a downwardmovement,-so that the friction of the disks,pr0- duced or increased bythe presence of said ribs, obviates the necessity for a back ratchet andpawl, as commonly used, to prevent a backward movement of the buckets.The lower edge of the periphery of the disk A has a greater or lessnumber of notches, a, to decrease friction, and these notches may beasmany as circumstances may require. They decrease friction by renderingthe edge flexible; but while flexibility is increased, the edge is notmade thin'and weak and liable to be torn or broken, and they do notpermit any escape of water from above them.

When water is being drawn, the chain B and its buckets, attached asshown, are drawn upward through the tube T, the lower end of which issubmerged in the water at the bottom of the well, and as each succeedingbucket enters the lower end of said tube, it cuts off the escape ofwater then in said tube, and forces it to move upward in advance of thebuckuntil it escapes at the upper end of the tube. ien then p wardmotion of the bncketsceases, 2 tube will be full of water, which must be'mitted to escape again, or it will be liable freeze in cold weather andburst the tube. Eleretoi'ore this escape has been efl'ected by selyfitting buckets, or by small permantly open escape-holes in the buckets.These rmit a constant escape while the water is ing elevated, as well aswhen the buckets at rest, and require a corresponding inzase of power.

My bucket fits perfectly tight when it is wing upward, and permits 'noescape; but e operator can at any moment arrest the -ward movement, andcause the escape-valve each bucket to open and discharge the war aboveit. Having described my invention, what I claim new 1's-- 1. Achain-pump bucket composed of a etallic shackle combined with an elasticina-rnbber disk, provided with cscapevalves, hich are automaticallyopened by a downard movement of said bucket, substantially 'wSGiT forth.

2. A chain-pump bucket composed of a metallic shackle, A, having theconvex disk at, and neck I), combined with an elastic disk, D, providedwith holes 61 d, substantially as set forth.

A chain pump packiug-disk, D, constructforth.

' WILLIAM PEOKHAM.

Witnesses:

DANIEL W. PEGKHAM, Anson UULVER.

.ed with ribs 6, and combined with a metallic with a packing-

